21 Oct
2019
21 Oct
'19
2:58 p.m.
On Mon, 21 Oct 2019, Thomas Gleixner wrote:
On Mon, 21 Oct 2019, Huacai Chen wrote:
@@ -50,7 +50,7 @@ static int do_hres(const struct vdso_data *vd, clockid_t clk, cycles = __arch_get_hw_counter(vd->clock_mode); ns = vdso_ts->nsec; last = vd->cycle_last;
if (unlikely((s64)cycles < 0))
if (unlikely(cycles == U64_MAX)) return -1;That used to create worse code than the weird (s64) type cast which has the same effect. Did you double check that there is no change?
It still does for 32bit.